Question

is is of the frin
bur+c, wbere,
Time Allowed
me
ordinates of the pounts where the
1.
Section A
If the product of nvo of the zeroes of the polynomial 21° -
zero of the polynomial is
croes and a cubic polyporal can have
he polynomial 275 - 9r2 + 13.7 - 6 is 2, then the third
oral ar * ar +
then
b) 2
a) -
c) - 2
or + cr
then
If two zeros of x-x2.5x -5 are
5 and
5, then its third zero is
a) 2
0
1
b)-2
d) -1
+ a2? + bir
+ a2 + hor
is-1, then the product of the
If one of the zeroes of the cubic polynomial r
other tivo zeroes is
wynomial
omal an and any non-zero
ch tar
a) b - a +1
b) 6-a + 1
cb+Q-1
d) b-q-1
4. Ify and are the two zeroes of the polynomial 3.2" +673 - 24" - 100
other two zeroes are
a) 1 and -1
b) 1 and 1
None of these
d) - 1 and -1
5 Ifa, 8 are the zeros of the polynomial f(x) = ax + bx + c, then ta
a) 6 = 20
b) b_Zac
d) -- Pac
06+ Pac
6.
Ifa, B are the zeros of the polynomial x2 + 6x + 2 then (a + 3) = ?
b) -12
a)-3
c) 3
d) 12
Degree of the polynomial 2x43x3-5x2-9x1 is
7
a) 3
b) 1
C) 2
d) 4
A polynomial of degree
is called a cubic polynomial.
a) 2
b) 0
CU: Derunn
1/3​

Answer 1

Answer:

In △ABC AB=AC

⇒∠B=∠C (Angles opposite to equal sides are equal)

Now using angle sum property

∠A+∠B+∠C=180

∘

⇒80

∘

+∠C+∠C=180

∘

⇒2∠C=180

∘

−80

∘

⇒∠C=

2

100

∘

=50

∘

now ∠C+∠x=180

∘

(Angles made on straight line (AC) are supplementary)

⇒50

∘

+∠x=180

∘

⇒∠x=180

∘

−50

∘

=130

∘

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